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3 years ago

How were the designs of Pasteur’s and Redi’s experiments different?

1 answer:

3 0

I just learned this in science a month ago! Redi used a piece of meat in a jar and covered it with a cheesecloth. He got another jar of meat and left it open. He wanted to see if magots developed from flies or not. Luis Pasteur used an 'S' tube thingy and put broth inside and boiled it. Then he waited to see if broth fogged up because of dust or microorganisms. One tube was pointed upward so dust could get inside, and the other, downward. Hope this kindof explains this topic to you!

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What process must metamorphic rocks undergo to become igneous rocks? (metamorphic rocks + ? = igneous rocks)

eduard

Answer:

Metamorphic rocks underground melt to become magma. When a volcano erupts, magma flows out of it. As the magma/lava cools it hardens and becomes igneous rock.

Explanation:

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3 years ago

What is true about a meal of a piece of salmon with garlic butter? high in fiber, low in protein. No vitamin B12, no iron, low i

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4 years ago

Read 2 more answers

Sheila weighs 60 kg and is riding a bike. Her momentum on the bike is 340 kg • m/s. The bike hits a rock, which stops it complet

mina [271]

Answer:

5.7 m/s

Explanation:

The computation of Sheila 's velocity right after she gets thrown out of the bike is shown below:

1) The Physical principle: conservation of momentum.

If there is no net external force operating on a system, so the system's total momentum is conserved

The momentum, p, is a vector magnitude that is determined as the product of the mass by the velocity:

P = mv.

2) Taking into account therefore that there is no net force on the device, Sheila and the momentum of the bike are the identical pre and post collision.

Based on this, the calculation is as follows

Momentum before the collision:

$P_1 = (mass\ of\ Sheila + mass\ of\ the\ bike) \times velocity$

$P_1 = (60kg + m) \times v_1$

= 340 kg m/s

Now Momentum after the collision:

$P_2 = mass\ of\ sheila \times velocity\ of\ Sheila + mass\ of\ the\ bike \times velocity\ of\ the\ bike$

$P_2 = 60kg \times v_2 + m \times 0 = 60kg \times v_2$

$P_1 = P_2$

$= (60kg + m) \times v_1$

$= 60kg \times v_2$

$= 340 kg .\ m/s$

$= 60kg \times v_2$

$v_2 = \frac{340\ kg .\ m/s }{60\ kg}$

= 5.7 m/s

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4 years ago

Read 2 more answers

What is the term used to identify a molecule responsible for reducing the amount of

Travka [436]

An enzyme. An enzyme is a protein speed up a biochemical reaction. It’s a catalyst.

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3 years ago

Read 2 more answers

1. Photosynthesis and cellular respiration are often described in two ways: (1) They are chemically opposite; and (2) They have

SVEN [57.7K]

Answer:

Photosynthesis and cellular respiration are chemically opposite. The reactants of photosynthesis are energy, carbon dioxide (6CO2), and water (6H2O). The products of cellular respiration are energy, carbon dioxide, and water. The products of photosynthesis are glucose (C6H12O6) and oxygen (6O2), and the reactants of cellular respiration are glucose (C6H12O6) and oxygen (6O2). So, the processes' equations are chemically opposite. The relationship between photosynthesis and cellular respiration is such that the products of one system are the reactants of the other. Without photosynthesis, cellular respiration couldn't take place, and without cellular respiration, photosynthesis couldn't take place. It's like a cycle.

Explanation:

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3 years ago